What products are generally formed when a metal oxide reacts with an acid?
Answer and explanation
Correct answer: Salt and water
The governing concept is neutralisation. Most metal oxides are basic oxides, so they react with acids to produce a salt and water. For example, CuO + 2HCl → CuCl₂ + H₂O. This is not a metal-displacement reaction, so metal and hydrogen are not the general products. Carbon dioxide is usually associated with an acid reacting with a carbonate, not an ordinary metal oxide. Hence option A is correct.
Frequently asked questions
What is the correct answer to this question?
Salt and water
Why is this the correct answer?
The governing concept is neutralisation. Most metal oxides are basic oxides, so they react with acids to produce a salt and water. For example, CuO + 2HCl → CuCl₂ + H₂O. This is not a metal-displacement reaction, so metal and hydrogen are not the general products. Carbon dioxide is usually associated with an acid reacting with a carbonate, not an ordinary metal oxide. Hence option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
